Improvement in pruning shears



.gleiten ta'tts 'uttnthgffire.

'DANIEL CAMPBELL, `or ELtzA'sETH, New .,IERSEY- ASSIGNOR To ENRYSEYMOUR, or "New renti errr. mais Manilva. 62,180, dans .www :ts-i,1867.

tMPRovsiii-ENT 1N PRUNING santes.

'ro ALL WHOMITMAY eoNeE''N;

.Be it known that I,'D NIL CAMPBELL,0` Elizabeth', Union county,anrlState of'Neui Jersey, have invented :t new and useful Improvement inPruningShears; nndI do hereby declare tlnit `the following is mfull,clear,`

and exact description thereof, `which will enable lothers skilled in.thenrt-to inekeandjusethe sainefreierence` being` had to theaccompanyingvr drawing, fermingapart o fthis speeicntim, in which;

Figure 1 represents anedge viewot' my improved pruning; sheet-sg. and'.l l Figure 2, a face view of the salue, partlyiin section.Sinnilarflettcrs of reference indicate like parts; i i This inventionrelates to an iinprovelnent in pruning shears, by moans ot`.\vl1icli4 adra'tvliug cut'is obtained, insteadiof that obtained by the ordinaryshears, which is a great .'in'iprovement, as th'e 'drawing clit, wherebyone blade is gradually drnirn obliqnelytoivards the cutting edge ofanother-stationery blndeQins-ures n. better operation and a cleaner cnt.i y

'My invention consists, first', in the arrangement vof the bl-adesandv,the i'nannerju which they ztre"operated,

so that theaioresaid drawing cntlvmary he obtained; second, inconstruction of the; handle Vo'f the apparatus,A

which iscomposed of a system of lcvers,lin`such .s .nann'er tlxirtbutlttle'pressure on them'willsudiecto oper'- ate the blades.

.The statienary bladenl is secured,by means of screws er other devices,to'thewoz'oden `stock The movhble'bla'd'e'C, 'the shank je whichisreurvetl, as seen in fig. :2, is not pivoted or otherwise secured-in.'th

v stock, but -slidesxin a groove corresponding with the curved part of`the s'hanl'i Thclmovabl blade ),yor

rather the curved portion offits shank, is held between the stationarybladeAand a plate, theilattrcr being'A l grooved in the manner shown.The shank c extonds over the'sideofA the stoel: Bby meansvof ahmzox'itnlv extension, c'. To the latter the rod'b is secured withitsupper end, thedower endot'the rod bei-ng secured to a pin', a. By thepin rt are connected and helcl'together two arms, d, each of whiclris-inturn pivQt'edQt-.o a

,togglelever D,as shown. AThe/latten are p-ivoted tothe lower end oi'the stock B. .A spiral spring, e, serves to pull the pivoting,` point aup, and thus open the shears as soon as' the handlesl) are released.

I am aivarcthat toggle-levers have been usedI already inf pruningknives= but never more than lone set of them. In that case thelower endot' 4the stoeli acted as n. handle, while the rodvtvhich operatesrtheblades was pivoted to the arm of the toggle -it was then necessary topush the 'toggle-lever against the lower end of 'the 4stock or handleto.opemte the shears. By my invention I dispense witha statienar'yhandle'altogetherjand itis i.

obvious that by pushing togetherthe levers D less -p'ower is neededthan' it would if only one lever is to be pushed against the stock.'.lhus thcsame amount ef-.p'ower is gained up'on the shears by mymethod, -while the f orce necessary to opeate'the apparatus is greatlyreduced; When thele'vers D are pushed togetlrenthe'pirifa win beam-wndown. Thusthe rod 1 wur-tino be punta down, maken; n the Sismi; of theambie tiene..` i Were the latter pivoted to the'stook in tll'e ordinaryman'ncrjbe effect would hethe 'same as usual'. But by my method theshank is gradually pulleddown through the curved groove in the plate f,pulling the bla-de` itself'- after itin the same curve, andthusfd'biwing the inestable. blade4 gradually and oblifliely towards the'cutting edge .of the stationary blade The long bacl: edge of the` slotin the plnte f gives good/safety and'stability 4to the blade C While thesame is being moved ,'w'hil the whole platef covering the .bont pert ot"the shank c,

acts ns yabetter guard for the same than the heads of screws orrivcts,heretofore generally used. I ntend to .use the shears-constructed onthis-principle'icr different purposes,V and not'onlyfor p runingortrimming trees. i

I claim as new, and desire to secure Vby Letters Patent;-` i i 1. .Thecombination of the curved slianh of themovable blade G vrith thegrooveil plntef and 'stationary blade A, 'substantially ns and for thepurpose herein shown and described.'

2*. I claim the application Ato pruning Vehenrs of the double set oftoggle-levers In), and i arms d, ntilde andA operating substantially aslie-rein shownvand described.. i i

` DANIEL CAALMPBELL;`

Witnesses:

STnNLsr G.- Missen, Jeux Ross.

